1947. First Edition. 99 pages. Dust jacket over brown cloth. Clean pages with noticeable tanning and mild foxing throughout. Tightly bound with faint thumb-marking throughout. Notable stain to fold out diagram by p.58. Boards have light shelf-wear with corner bumping. Boards are mildly warped. Unclipped jacket has moderate edgewear with chips, tears, and creasing. Heavy tanning to spine. Notable rubbing and marking all over. Mild water droplets to panels.